49
RCD-CX1
Terminal Function
Pin No.
Pin Name
Function
1
AGND
Analog ground for control chip power supply.
2
VSS
Negative power supply for control chip (-5V).
3
THM
Thermal Monitor
Error signal of open collector output “L” for two conditions.
1. Over temperature limitation.
2. Over temperature warning. By connecting to the ENA pin, thermal shutdown is set.
4
ENA
Bi-direction input/output.
The input “H” enables to start switching and the input “L” disables.
Input is including hysteresis for glitch free enable of the system.
When the protection circuit detects the over voltage condition, the open collector output turns on.
5
NC
6
OCM
Over Current Monitor
Error signal of open collector output “L” for two conditions.
1. Over current limitation.
2. For monitoring the state of control and average voltage across the zobel resistor in case of of-limit
conditions.
7
DCG
This high impedance output generates a current in case of over voltage condition on the power stage
voltage (VD/VS).
This current is designed to turn-on a set of discharge transistors.
8
VSCK
This high impedance input for monitoring negative power stage.
This monitoring controls the soft clipping circuit and the over voltage shutdown.
9
AGND
Analog ground for control chip power supply.
10
VDCK
This high impedance input for monitoring positive power stage.
This monitoring controls the soft clipping circuit and the over voltage shutdown.
11
VSS
Negative power supply for control chip (-5V).
12
AGND
Analog ground for control chip power supply.
13
NC
14
AGND2
Input reference for channel 2.
This is true inverting low impedance (1kohm) input for avoiding ground loop noise.
15
IN2+
High impedance audio input for channel 2.
This input is non-inverting.
16
AGND1
Input reference for channel 1.
This is true non-inverting low impedance (2kohm) input for avoiding ground loop noise.
17
IN1-
High impedance audio input for channel 1.
This input is inverting.
18
NC
19
TEST
Test terminal connect to VSS.
20
VSS
Negative power supply for control chip (-5V).
21
AGND
Analog ground for control chip power supply.
22
VDD
Positive power supply for control chip (+5V).
23
FB1
Feedback for global loop of channel 1.
24
NC
25
ZB1
For estimating the power dissipation in the zobel resister,
this input is sensing the zobel voltage via a resistive network of channel 1.
26
VDR1
Positive supply for driver chip of channel 1 with respect to VS1; (VS1+10V).
27
VD1
Positive supply for power stage of channel 1.
28
VD1
Positive supply for power stage of channel 1.
29
VS1
Negative supply for power stage of channel 1.
30
VS1
Negative supply for power stage of channel 1.
31
PWM1
PWM output of channel 1.
32
PWMFB1
Feedback for inner loop of channel 1.
33
SUB
Substrate of IMST.
34
VS
Negative supply for power stage.
35
VDR2
Positive supply for driver chip of channel 2 with respect to VS2;(VS2+10V).
36
VD2
Positive supply for power stage of channel 2.
37
VD2
Positive supply for power stage of channel 2.
38
VS2
Negative supply for power stage of channel 2.
39
VS2
Negative supply for power stage of channel 2.
40
PWM2
PWM output of channel 2.
41
PWMFB2
Feedback for inner loop of channel 2.
42
ZB2
For estimating the power dissipation in the zobel resister,
this input is sensing the zobel voltage via a resistive network of channel 2.
43
NC
44
FB2
Feedback for global loop of channel 2.
Summary of Contents for RCD-CX1
Page 4: ...4 RCD CX1 DIMENSION 138 8 130 4 158 300 7 25 5max 220 220 48 212 300 10 100 40 40 40 ...
Page 44: ...44 RCD CX1 MEMO ...
Page 51: ...51 RCD CX1 TC9273CFG IC501 BLOCK DIAGRAM ...
Page 53: ...53 RCD CX1 PRINTED WIRING BOARDS 8U 210024 SYS DAMP DISP P W B UNIT 1 2 COMPONENT SIDE ...
Page 54: ...54 RCD CX1 8U 210024 SYS DAMP DISP P W B UNIT 2 2 FOIL SIDE ...
Page 55: ...55 RCD CX1 8U 210025 SMPS SPT P W B UNIT COMPONENT SIDE FOIL SIDE ...
Page 56: ...56 RCD CX1 8U 310008 DRIVE SACD DAC P W B UNIT COMPONENT SIDE FOIL SIDE ...
Page 78: ...78 RCD CX1 MEMO ...
Page 90: ...90 RCD CX1 MEMO ...
Page 94: ...8 7 6 5 4 3 2 1 A B C D E F RCD CX1 SCHEMATIC DIAGRAMS 2 24 8U 310008 DRIVE SACD DAC UNIT 2 3 ...
Page 95: ...8 7 6 5 4 3 2 1 A B C D E F RCD CX1 SCHEMATIC DIAGRAMS 3 24 8U 310008 DRIVE SACD DAC UNIT 3 3 ...